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can you click on f12 before it goes to boot password?
The F12 Boot Menu allows you to choose which device that you would like to boot the computer's Operating System from by pressing the F12 key during the computer's Power On Self Test, or POST process. Some notebook and netbook models have the F12 Boot Menu disabled by default.
If this sounds like your problem then try this:
If this sounds like
To enable the F12 Boot Menu:

Restart the computer.

Press the F2 key to enter computer's BIOS Setup during Power-On Self-Test, or POST, process while the Acer logo is being displayed.

Press the Right Arrow key to select Main

Select F12 Boot Menu

Press the Enter key

Select Enabled

Press the Enter key

Press the F10 key and then press the Enter key to save the changes and restart the computer.

Note: Not all Acer notebooks or netbooks have the F12 Boot Menu feature. Computers that do not have the F12 Boot Menu feature will not be able to enable the feature within the BIOS. I hope this works for you if not, then the problem is obviously not the boot menu. Go to Acer support for more help

Restart your computer
During the boot process you
will see on the screen to press a certain key to enter setup usually the Delete
or F2 key
this will vary depending on
your computer and operating system
Press and hold that key
during the boot up process to enter BIOS using the arrow keys load
failsafe defaults or load optimized
defaults press escape then press f10 to save to cmos to restart.
This will set the boot
order
If this fails you might try
some of these
Acer: - Ctrl+Alt+Esc

there may be some problems with the windows restore files
try out this one
switch on the laptop while booting ie when you see the compaq logo on screen press 'F8' key , now you will get a DOS screen and select the "last known Good Configuration mode"
Now it should work

To boot to safe mode:Restart
the computer. As soon as the BIOS has finished loading, keep tapping on F8 key on your
keyboard. When the Windows Options menu appears select the "Safe
mode" then press Enter.

Once
you managed to boot to Safe mode, change the computer startup and
recovery settings by right-clicking "My Computer" then select
Properties. Select Advanced tab. Under Startup and Recovery, click
Settings. Uncheck the box for "Automatically restart" under System
Failure.

Reboot again normally, see if it will reboot again by
itself. If you managed to make the system boot normally, proceed to
Events Viewer to find out what is the caused.

If the system
failed to boot normally after doing the above, you might want to boot
the system to "Last known good configuration"

look to device manager maybe its aproblem with hid drivers if not go to manufaturers website and from there u can download the user manual to know how to open your lappy and look is it connected to motherboard